Cartridge for use in fixing an anchor bolt and a method

Abstract

A cartridge for use in fixing an anchor bolt that encludes a fluidtight constructed casing having therein a first fluidtight chamber and a second fluidtight chamber separated from the first chamber, the first chamber containing a resin composed mainly of an ester of an epoxy resin with an organic acid comprising acrylic acid, methacrylic acid or a mixture thereof, the second chamber containing a curing agent for the resin. By the use of such a cartridge in fixing an anchor bolt to a base, there can be attained a quick fixation of the anchor bolt to the base, a high adhesive strength between the anchor bolt and the base, and a high chemical resistance of the cured resin, with little or no lowering of the adhesive strength for an prolonged period of time.

What is claimed is: 
     
       1. A cartridge for use in fixing an anchor bolt, comprising: (a) a casing having a fluidtight construction;   (b) partitioning means disposed in said casing for forming a first and a second chamber which are fluidtight relative to each other;   (c) a resin contained in said first chamber, said resin being substantially composed of an ester of an epoxy resin with an organic acid selected from the group consisting of acrylic acid, methacrylic acid and a mixture thereof and a reactive monomer; and   (d) a curing agent for said resin component contained in said second chamber, said curing agent comprising an organic peroxide,   said casing and said partitioning means being breakable by the action of the anchor bolt so that said resin and said curing agent are homogeneously mixed when the anchor bolt is driven into said cartridge.   
     
     
       2. The cartridge according to claim 1, wherein said resin has a viscosity of 5,000 poises or less at 25° C. as measured using a rotational viscometer according to JIS K6901-1977. 
     
     
       3. The cartridge according to claim 2, wherein said reactive monomer has at least one member selected from the group consisting of styrene, a vinyltoluene, a chlorostyrene, butyl acrylate, methyl methacrylate and diallyl phthalate. 
     
     
       4. The cartridge according to claim 1, wherein said epoxy resin has at least one polyfunctional epoxy resin selected from the group consisting of bisphenol type, polyphenol type, halogenated bisphenol type, polyglycidyl ester type, polyglycidyl ether type, and peracetic acid oxidation type epoxy resins. 
     
     
       5. The cartridge according to claim 1, wherein said epoxy resin has at least one polyfunctional epoxy resin selected from the group consisting of bisphenol A type and bisphenol F type epoxy resins. 
     
     
       6. The cartridge according to claim 4, wherein said epoxy resin has at least one polyfunctional epoxy resin selected from the group consisting of bisphenol A type and bisphenol F type epoxy resins. 
     
     
       7. The cartridge according to claim 1, wherein said curing agent has at least one member selected from the group consisting of benzoyl peroxide, methyl ethyl ketone peroxide, lauroyl peroxide, dicumyl peroxide, tert-butyl peroctoate, cumene hydroperoxide, and cyclohexanone peroxide. 
     
     
       8. The cartridge according to claim 1, wherein said curing agent has at least one member selected from the group consisting of benzoyl peroxide and methyl ethyl ketone peroxide. 
     
     
       9. The cartridge according to claim 7, wherein said curing agent has at least one member selected from the group consisting of benzoyl peroxide and methyl ethyl ketone peroxide. 
     
     
       10. The cartridge according to claim 1, wherein the epoxy resin component has an epoxy equivalent of about 150 to about 500 and a molecular weight of about 300 to about 1,000. 
     
     
       11. The cartridge according to claim 1, wherein the reactive monomer is employed in an amount of 30 to 60% by weight based on the total amount of epoxy acrylate resin and the reactive monomer. 
     
     
       12. The cartridge according to claim 1, further comprising a cure accelerator selected from the group consisting of amines, metallic soaps and chelate compounds. 
     
     
       13. The cartridge according to claim 1, further comprising an aggregate and a filler. 
     
     
       14. The cartridge according to claim 1, wherein the amount of the epoxy acrylate and the reactive monomer are 40 to 100 parts by weight and 0 to 60 parts by weight, respectively. 
     
     
       15. The cartridge according to claim 1, which comprises 0 to 5 parts by weight of a cure accelerator, 0 to 0.2 parts by weight of a polymerization inhibitor, 0 to 500 parts by weight of an aggregate, 0 to 500 parts by weight of a filler and 1 to 10 parts by weight of the curing agent based on the weight of the epoxy acrylate resin and reactive monomer. 
     
     
       16. The cartridge according to claim 1, wherein the partitioning means is an enclosed capsule disposed within said fluidtight casing. 
     
     
       17. The cartridge according to claim 16, wherein the curing agent is disposed within the enclosed capsule and an aggregate and filler is disposed between the enclosed capsule and the fluidtight casing. 
     
     
       18. The cartridge according to claim 16, wherein an aggregate and filler is disposed within the enclosed capsule and the curing agent is disposed between the enclosed capsule and the fluidtight casing. 
     
     
       19. A method of fixing an anchor bolt, comprising: (1) drilling a hole in a base;   (2) inserting a cartridge into the hole, said cartridge comprising: (a) a casing having a fluidtight construction;   (b) partitioning means disposed in said casing for forming a first and a second chamber which are fluidtight relative to each other;   (c) a resin being contained in said first chamber, said resin being substantially composed of an ester of an epoxy resin with an organic acid selected from the group consisting of acrylic acid, methacrylic acid and a mixture thereof and a reactive monomer; and   (d) a curing agent for said resin component contained in said second chamber, said curing agent comprising an organic peroxide; and     (3) driving an anchor bolt into the hole so that said casing and said partitioning means of said cartridge are broken by the anchor bolt which allows said resin and said curing agent to be homogeneously mixed and to fill in spaces between the inner wall of the hole and the periphery of the bolt, which enables the anchor bolt to be fixed to the base in a short period of time, with a strong adhesive connection between the anchor bolt and the base, said strong adhesive connection having a high resistance to chemicals and water.   
     
     
       20. The method according to claim 19, wherein the width of the cartridge is 1 to 5 mm larger than the outer diameter of the anchor bolt. 
     
     
       21. The method according to claim 19, wherein the ratio of the length of the cartridge to the depth of the hole is 0.7 to 1.0. 
     
     
       22. The method according to claim 19, wherein the forward end of the anchor bolt is cut diagonally with respect to the axis of the anchor bolt. 
     
     
       23. A curable composition, comprising: a resin being substantially composed of an ester of an epoxy resin with an organic acid selected from the group consisting of acrylic acid, methacrylic acid and a mixture thereof and a reactive monomer; and   a curing agent for said resin component comprising an organic peroxide.